Re: [R] help with predict.glm, and charting with factors

2012-12-12 Thread Thomas Stewart
Chad- The plot you hope to create is meaningful when the variable temperature is treated as a continuous variable. Below is some code that treats temperature as a continuous variable and creates the plot. Note that temperature enters the model "linearly", and you may want to explore other possib

Re: [R] help with predict.glm, and charting with factors

2012-12-12 Thread ONKELINX, Thierry
mer Verzonden: woensdag 12 december 2012 13:50 Aan: r-help@r-project.org Onderwerp: [R] help with predict.glm, and charting with factors Dear R Wizards, After much frustration and days of confusion I have finally broken down and am asking for help, which I don't like doing, but I just can't

[R] help with predict.glm, and charting with factors

2012-12-12 Thread Chad Widmer
Dear R Wizards, After much frustration and days of confusion I have finally broken down and am asking for help, which I don’t like doing, but I just can’t figure this one out on my own. I’ve conducted a laboratory experiment testing the effects of temperature and salinity on whether or not a biol